olemus
biomeetria alldistsipliin, mis põhineb uuritava biomeetriku liigil, näiteks näotuvastus, iirisetuvastus, kõnetuvastus
ISO/IEC 19794:
biomeetriatehnoloogia liik, näiteks sõrmejäljebiomeetria
= type of biometric technology
EXAMPLE: Fingerprint.

näiteid
https://www.researchgate.net/profile/Syed_Zulkarnain_Syed_Idrus/publication/281659557/figure/fig3/AS:614304919347233@1523473114693/Examples-of-biometric-modalities-that-can-be-used-to-authenticate-an-individual.png
https://live.staticflickr.com/7347/12086546955_fbdbf2473e_b.jpg

ülevaateid
http://www.aabri.com/manuscripts/121349.pdf
http://publications.quest.edu.pk/downloads/qrj_split_issues/Vol15_2/paper3.pdf
https://www.ijeast.com/papers/30-35,Tesma204,IJEAST.pdf
https://dl.gi.de/bitstream/handle/20.500.12116/37475/biosig2021_proceedings_09.pdf?sequence=1&isAllowed=y
https://documents1.worldbank.org/curated/en/099025009302216641/pdf/P17159207bc5150a308b380001fc5e8e0ff.pdf

vt ka
https://en.wikipedia.org/wiki/Modality_(human%E2%80%93computer_interaction)